?吃饱

eat one's head off——好吃懒做、无所事事； eat one's fill——吃饱； eat one's words——食言，也有认错道歉，就像eat crow有被迫人错的意思（crow——乌鸦、撬棍）； ..

?吃个饱

... Eat at pleasure,drink with (或by) measure. [谚语]随意吃饭，适度饮酒。(或：吃饭请随便，饮酒莫过量。) eat one's fill 吃个饱；尽量吃 eat short (如糕饼之类)吃起来松脆，到口酥 ...

?尽量吃

... Eat at pleasure,drink with (或by) measure. [谚语]随意吃饭，适度饮酒。(或：吃饭请随便，饮酒莫过量。) eat one's fill 吃个饱；尽量吃 eat short (如糕饼之类)吃起来松脆，到口酥 ...